WJEC GCSE Chemistry
Exam Questions

Elements & Compounds, Chemical Symbols & Formulae, Relative Atomic Mass & Relative Molecular Mass, Percentage Composition, Separating Mixtures, Conservation of Mass, Evidence of a Chemical Reaction, Chemical Equations, Percentage Yield, Reacting Masses, The Avogadro Constant & the Mole

Atomic Structure, Atomic Number, Mass Number & Isotopes, Relative Atomic Mass, The Periodic Table, Electronic Structure, Trends in the Periodic Table, Reactions of Alkali Metals, Testing for Hydrogen Gas, Reactions of Halogens, Group 0 Gases, Testing Cations & Anions, Identifying Unknown Ionic Compounds

Composition of Water, Sustainable Water Supply, Water Treatment, Fluoridation of Water, Desalination, Distillation, Solubility Curves, Hard Water, Water Softening, Benefits & Drawbacks of Hard Water, Determining Hardness in Water

Structure of the Earth, Plate Tectonics, Plate Boundaries, The Atmosphere, Carbon Dioxide & Sulfur Dioxide Emissions, Global Warming & Acid Rain, Testing for Oxygen & Carbon Dioxide

Determining the Rate of Reaction, Factors Affecting Rates, Hydrochloric Acid & Sodium Thiosulfate, Particle Theory, Catalysts, Enzymes, Rate of Reaction Using Gas Collection

Carbonates, Thermal Stability of Carbonates, The Limestone Cycle, Using Limestone

Properties of Substances, Metallic Bonding, Ionic Bonding, Giant Ionic Structures, Covalent Bonding, Intermolecular Bonding, Diamond & Graphite, Fullerenes, Carbon Nano-tubes & Graphene, Bulk Properties, Nano-scale Particles, Smart Materials

The pH Scale, Hydrogen & Hydroxide Ions, Acids Reacting with Metals, Neutralisation of Acids, The Acid-Carbonate Reaction, Making Soluble Salts, Preparing Crystals of a Soluble Salt, Naming Salts, Testing for Sulfate Ions, Titrations, Acid-Base Titration, Concentrations in mol dm-3, Neutralisation Calculations, Dilute or Concentrated Acids, Strong & Weak Acids, Making Insoluble Salts

Metal Ores, Native Metals, Metal Reactivity, Metal Displacement Reactions, Oxidation & Reduction, Extraction of Iron, Electrolysis of Molten Ionic Compounds, Oxidation & Reduction Using Electrons, Extraction of Aluminium, Properties of Metals, Transition Metals, Identifying Metal Ions, Alloys, Electrolysis of Water, Electrolysis of Aqueous Solutions, Investigating Electrolysis, Electroplating, Electrolysis of Brine, Factors Affecting Extraction Processes

Exothermic & Endothermic Reactions, Energy Profiles, Bond Energy Calculations

Crude Oil, Fractions in Crude Oil, Impact of the Oil Industry, Combustion of Hydrocarbons, Energy Density of a Fuel, Energy from Fuels, Hydrogen as a Fuel, The Fire Triangle, Cracking Hydrocarbons, Naming Alkanes & Alkenes, Isomerism in Hydrocarbons, Alkenes, Addition Polymerisation, Plastics, Alcohol, Uses of Ethanol, Naming Alcohols, Oxidation of Alcohols, Infrared Spectroscopy

Reversible Reactions, The Haber Process, Choosing the Haber Process Conditions, Testing for Ammonia, The Contact Process, Concentrated Sulfuric Acid, Fertilisers, Testing for Ammonium Ions, Benefits & Problems of Fertilisers